TY - GEN
T1 - Post-RGB and Post-AGB stars as tracers of binary evolution
AU - Kamath, Devika
PY - 2019/12/30
Y1 - 2019/12/30
N2 - Binary interactions can alter the intrinsic properties of stars (such as: Pulsation, mass-loss, photospheric chemistry, dust-formation, circumstellar envelope morphology etc.) and can even play a dominant role in determining its ultimate fate. While past studies have shown that binarity can end the AGB life of a star, recent studies have revealed that in specific cases binarity also pre-maturely terminate the RGB evolution. A characteristic feature of evolved binaries is the presence of a Keplerian circumbinary disc of gas and dust which plays a lead role in the evolution of the systems. In this article, I will review our advances in the research landscape of post-RGB and post-AGB binary stars, focussing on their observational properties, spectral energy distribution, photospheric chemistry, the evolution of their stable circumbinary discs, and the evolutionary connection between the enigmatic post-AGB/post-RGB binaries, and other systems whose primary component is a white dwarf.
AB - Binary interactions can alter the intrinsic properties of stars (such as: Pulsation, mass-loss, photospheric chemistry, dust-formation, circumstellar envelope morphology etc.) and can even play a dominant role in determining its ultimate fate. While past studies have shown that binarity can end the AGB life of a star, recent studies have revealed that in specific cases binarity also pre-maturely terminate the RGB evolution. A characteristic feature of evolved binaries is the presence of a Keplerian circumbinary disc of gas and dust which plays a lead role in the evolution of the systems. In this article, I will review our advances in the research landscape of post-RGB and post-AGB binary stars, focussing on their observational properties, spectral energy distribution, photospheric chemistry, the evolution of their stable circumbinary discs, and the evolutionary connection between the enigmatic post-AGB/post-RGB binaries, and other systems whose primary component is a white dwarf.
KW - stars: AGB and post-AGB
KW - stars: binaries
KW - stars: evolution
KW - stars: fundamental parameters
KW - stars: chemically peculiar
KW - Galaxy: stellar content
KW - galaxies: Magellanic Clouds
UR - http://www.scopus.com/inward/record.url?scp=85077327375&partnerID=8YFLogxK
U2 - 10.1017/S1743921318006154
DO - 10.1017/S1743921318006154
M3 - Conference proceeding contribution
AN - SCOPUS:85077327375
SN - 9781108471527
T3 - Proceedings of the International Astronomical Union
SP - 209
EP - 219
BT - Why galaxies care about AGB stars : a continuing challenge through cosmic time
A2 - Kerschbaum, Franz
A2 - Groenewegen, Martin
A2 - Olofsson, Hans
PB - Cambridge University Press (CUP)
CY - Cambridge
T2 - 343rd Symposium of The International Astronomical Union
Y2 - 20 August 2018 through 23 August 2018
ER -